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利用失重飞机提供的短时失重、超重和常重力交变环境,研究了膜式静态水气分离器首级可视化分离室和再循环管道中的水气两相流动构型。首级分离室内变截面蛇形窄通道内变质量流率的气液两相流动表现为间歇状的、不稳定的溪状流,在不同重力阶段具有几乎相同的变化特征。再循环管路内的气液两相流主要以细碎的泡状流和弹状流为主,气泡或气团间平均间距极大,含气率演化过程具有强烈的间歇性,但在抛物线飞行过程中含气率变化的总体特征与重力水平的变化基本无关。这表明静态水气分离器的工作性能基本不受重力影响。
Based on the short-term weightlessness, overweight and constant gravity alternating environment provided by weightless aircraft, the two-phase flow configuration of water and gas in the first-stage visualized separation chamber and recirculation pipeline of membrane-type static gas-liquid separator was studied. The gas-liquid two-phase flow with variable mass flow rate in the serpentine narrow channel with variable section in the primary separation chamber behaves as a intermittent, unstable stream with almost the same variation characteristics at different gravitation stages. The gas-liquid two-phase flow in the recirculation pipe is dominated by finely divided bubbly flow and slug flow, and the average spacing between bubbles or gas groups is extremely large. The evolution of gas content has a strong intermittency. However, during the parabolic flight The general characteristics of changes in gas content have little to do with changes in gravity. This indicates that the working performance of the static moisture separator is basically not affected by gravity.